Billboard: With an emphasis on acoustic guitars and lap steel, the song has a country feel, while the lyrics address a hopeful comeback.
Rolling Stone: If the contemplative, optimistic "Shadow Days" is any indication, Mayer's upcoming album, Born and Raised, will be a happy one.
Entertainment Weekly: Based on the minute of “Shadow Days” he posted, he comes across as contrite (he opens with the line, “Well I ain’t no troublemaker/ And I never meant her harm”) and ready to put his past behind him (it closes with “My shadow days are over”).
Neon Limelight: John’s back and just released a preview of the set’s first single, an almost country-leaning tune.
International Business Times: If the lyrics to "Shadow Days" are any reference to Mayer's newfound look on life, fans are in for another personal, confessional album